Hydrocarbon-furnace.



J. S. THOMPSON.

HYDROCARBON FURNACE.

APPLICATION HLED SEPT-21. I910.

Patented July 27, 1915.

2 SHEETS-SHEET I.

, 1 l I l I l l l l 1 I I I I l 1 l I l J l l I I 1 I I l l I I LNVENTOR COLUMBIA PLANOGRAPH c0.,wAsHINu'roN. D. c.

J. S. THOMPSON.

HYDROCARBON FURNACE.

APPLICATION FILED SEPT-2|. 1910.

1,M8A6& Patented July 27, 1915.

SHEETS-SHEET 2.

' f "s: WITNESSES cougmzm PMNOURAPH co., WASHINGTON. n4 v;v

UFQ.

JAMES SHIELDS THOMPSON, OF CHICAGO, ILLINOIS.

HYDROCARBON-FUR'NACE.

LIaSAEGS.

Application filed September 21, 1910.

and a resident of Chicago, in the State. of.

Illinois, have invented certain new and, use ful Improvements inHydrocarbon -Furnaces, of which the following is a specification.

My invention relates. in general to furnaces and to processes ofproducing combustion therein, and more particularly to. furnacesutilizing fuel oil as fuel and has special reference to the provision ofan improved type of furnace better adapted than others known to me foreffecting a more perfect combustion of the oil with a consequent greaterdegree of heat.

The principal objects of my present invention are the provision of afurnace characterized as above wherein there is attained.

a most thorough and complete vaporization of the oil, and mixture of thegas thus pro-.

duced and air at the time of ignition; one wherein the ignited mixtureis subjected to successive jets of air in order to. attain the highestdegree of'combustion. and consequent heat; one wherein the conduits ofthe several air supplies are independently regulable to the end that airmay be supplied at the points where in experience it is. found mostdesirable to supply itin order to attain the maximum amount of heat withthe minimum, amount of oil to provide. a. furnaceof the type referred towhich will occupy a small floor space relative to its capacity may bemost. easily and economically con structed, operated and maintained,wherein all partsWill be most, readily accessible and which will requirea minimum. of. expense of repair; together with such other objects asmay hereinafter appear.

Furnaces of the present general type are useful for many purposes. Amongothers may be. mentioned the heating of boiler-tubes for welding newends thereon, preparatory to emplacing them in boilers, and. for otheroperations in constructionand repair. shops wherein intense, and highlylocalized and concentrated heat isfrequi-red, and time is the essentialelement of efficient operation. For purposes of illustration I thereforeshow my improved apparatus as, constructed for heating a plurality ofboiler tubes, though it is obvious that. with slight. modification itmay readily be adapted to a num: ber of other uses. In practice I havefound Specification, of Letters Patent.

PatentedJuly 27,1915.

Serial No. 583,120.

that by the provision of a furnace ofthe present construction I am ableto quickly attain an intense white heat which enables me to carry on theoperations of welding boiler tubes with facility and great expeditron,thereby rendering possible a considerable economy in time, not only ofthat of the individual operators, but also of that required for repairof boilers.

In the attainment of the foregoing objects and the advantages, as wellas such others as may hereinafter appear, I have provided a constructionillustrated in preferred form in the accompanying drawings, wherein-Figure 1 is a front elevational view of a furnace embodying myimprovements; Fig.

2 is at end elevational view of the furnace of Fig. 1;, Fig. 3 is asectional view taken of the line IIIIII of Fig. 4:; Fig. 4 is asectional view taken on the line IV-IV of Fig. 5-; and Fig. .5 is asectional view taken on the line VV of Fig. 4.

Referringfirst more particularly to Figs. 1 and 2 of the drawing it willbe observed that the furnace proper 10 is supported on suitable legs1-1-11', which are here shown as integral with the framing members12-12, though obviouslv the entire body of the furnace maybe built up offire brick, instead of lined With refractory material as hereillustrated. For the purpose of supplying oil to the furnace I make useof a pipe 13 attached. to a convenient source of oil supply (not shown),and for the purpose of supplying airto the furnace, of a conduit 1. Lconnected to a source of air under compression, which may be a storagetank, an air compressor, a fan or such other means as may beconveniently at hand (not shown).

Admission of oil to the furnace is preferably controlled by a needlevalve 15 and to facilitate cleaning of the pipe 13 or drawingoff the oilsupply, I make use of a drain cook 16. Admission of air supplied to theinterior of the furnace byextensions 17,. 18 and 1.9 of the pipe, 14 maybe controlled by any suitable means, preferably slide valves 20, 21 and22, the respective functions of which will be below pointed out. Forvaporizingthe oil and mixingthe gas with. air preparatory to ignition Imake use of a construction of burner wherein the conduit 17 terminatesin a. casing 23, introduced into the furnace. Adjacent to the point ofentry of the casing 23 into the furnace, I provide a long horizontalprimary combustion chamher 26 having a passage 27, whereby (Fig. 3)insertion of burning waste for the initial ignition of the vapor onstarting the furnace may be attained. At the end of the chamber 26, .Iprovide a vertical secondary combustion chamber 29 and at the topthereof; a horizontal heating chamber 30 arranged substantially parallelwith chamber 26.- The three chambers are lined with fire brick' or otherrefractorymaterial in case the furnace as a whole is not built of suchmaterial, providing a refractory member 31 whereby heat absorbedineither chamber a-ids in heating the other chamber. Referring now moreparticularly to Fig. i it will be observed that at the outer end of thechamber 26, and preferably concentric with the chamber 29, I arrangeapassage 31, connected to the air supply pipe 18, and at the upper endof the chamber 29 a passage 32 connected with the air supply pipe 19.The

outer end of the heating chamber 30 is provided With apassage 33terminating in an obliquely directed spout 34 (Fig. 5) whereby the slagmaybe directed away from the I pipes Band 17 and the slide 20, in orderto a void'fouling them, and the outer endof the passage is likewiseprovided with an upwardly directed draft passage 34, by stopping ofwhich the draft may be controlled.

' i From inspection of Figs. land 5' particularly, it will be observedthat the chamber 30 is open to the atmosphere on both sides and hasprovided on each side rests hav- V ingdished portions 36 to maintain thetubes or other articles in position and to prevent them from contactwith each other and consequent coalescense during the heating operation.

v'Forthe purpose of shielding the operatives from the heat of thefurnace I provide the front thereof'with a water curtain, indicated at4:0 in Fig. 2 (and in dotted lines in Fig. 1') such curtain being cooledby a spray supplied by'the pipe 41 connected to a convenient source ofwater supply (not shown) and is further cooled by an air blast from theperforations 43 in the pipe 441- which is connected at a convenientpoint to the conduit l4.

' In the'operation of my improved furnace and carrying out my improvedprocess of combustion, lighted waste is first inserted through theopening 27 in the usual manner, the valve 15 opened 'andthe slide 20partly moved outward to allow the influx of oil'and air respectively.The vapor becoming ignited is forced through the primary combustionchamber 26 into the secondary combustion chamber 29 and thenceto the thepassage 31' whereby it is further comminuted and oxidized, the draftreinforced and as it approaches the heating chamber 30 (the slide 22having been opened) to a third jet of air from the passage 32, by whichoperation the greatest amount of air which can be made use of in theeflicient burning of the vapor is supplied. It will be apparent onviewing the drawings, especially Fig. 4, that as the vapor is subjectedto a jet striking itat right angles at three points, viz. at 61, whereit leaves the casing 17, at 31, and at 32 a high degree of comminutionand vaporization, a thorough admixture of air with consequentcombustion, and such degree of velocity as may be desired, is attained,and not only the mixture, but also the admission of air both in respectto volume and to the points where combustion can be most thoroughlyeffected is fully regulable, and that the relative volumes of the oil,vapor, and several jets of air are entirely under the control of theoperator, and that thereby the air may be admitted at the points whereit will be most effective in securing the highest degree of combustionand thence heat.

Having thus described my invention, what I claim is new and desire tosecure by Letters Patent is the following l. A furnace comprising, incombination, a primary combustion chamber, a secondary combustionchamber arranged at an angle thereto, a heating chamber arranged at anangle to the secondary combustion chamber, and a slag vent at the end ofand in line with said heating chamber opposite to its connection withsaid secondary combustion chamber.

2. A furnace comprising, in combination, a horizontal combustionchamber,a vertical secondary combustion chamber communieating therewith, ahorizontal heating chamber communicating with said secondary combustionchamber, and an air conduit for each of said chambers and arranged fordischarge thereinto.

3. A furnace comprising, in combination, a horizontal combustionchamber, a vertical secondary combustion chamber communicatingtherewith, a horizontal heating chamber communicating with saidsecondary combustion chamber, an independent air conduit for each ofsaid chambers and arranged for discharge thereinto, and independentmeans for regulating the admission of air to each of said conduits.

4. A furnace comprising, in combination, a primary combustion chamber, asecondary combustion chamber, a heating chamber, a main air pipe havingextensions to each of said chambers and arranged for dischargethereinto, a burner in said primary combustion chamber and a source ofoil supply for said burner.

5. A furnace comprising, in combination,

a primary combustion chamber, a secondary combustion chamber, a heatingchamber, air supply connections for each of said chambers and arrangedfor discharge thereinto, a burner in said primary combustion chamber anda source of oil supply for said burner, said several air connectionsbeing provided with independent controlling means.

6. A furnace comprising, in combination, a horizontal primary combustionchamber, a horizontal heating chamber, a secondary combustion chamberconnecting said two first mentioned chambers, air supply con nectionsprovided With orifices in line With each of said chambers, a burner inthe primary combustion chamber connected to a source of oil supply andto one of said sources of air supply, and independent means forcontrolling the admission through each of said several supplyconnections.

7 A furnace comprising in combination, a horizontal primary combustionchamber, a horizontal heating chamber, a secondary combustion chamberconnecting said two first mentioned chambers, air supply connectionsprovided with orifices in line With each of said chambers, a burner inthe primary combustion chamber connected to a source of oil supply andto one of said sources of air supply, and independent means forcontrolling the admission through each of said several air supplyconnections.

In testimony whereof I have hereunto signed my name inthe presence ofthe two subscribed Witnesses.

JAMES SHIELDS THOMPSON.

Witnesses:

R. H. QUAYLE, PAUL CARPENTER.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. 0.

